What is the best landscape lens for Fujifilm X-T5?

I finally bit the bullet and grabbed the X-T5 last month and man that 40 megapixel sensor is no joke but it is seriously making me rethink my entire lens lineup. I have been shooting with Fuji since the original X-E1 days so I know my way around the system but this high resolution jump is a whole different beast when it comes to landscape work. Im planning this big hiking trip to the Dolomites in Italy next month and I really want to make the most of those pixels.

My logic was originally to just stick with my old 10-24mm f4 but after some test shots in the backyard I feel like it is just not resolving the fine details like it used to on my older bodies. It feels a bit mushy in the corners? So I started looking at the newer stuff. I was thinking maybe the 18mm f1.4 LM WR because everyone says it is basically the sharpest thing Fuji has ever made but then I worry 18mm isnt wide enough for some of those massive mountain vistas.

Then I looked at the 8-16mm f2.8 but that thing is huge and I am trying to keep my pack light for the long hikes plus the lack of front filter threads is a massive pain for my long exposure stuff. Here is what I am stuck between right now:

• The newer 10-24mm WR version (is it actually better glass or just weather sealing?)
• The 14mm f2.8 (older but maybe a hidden gem?)
• The 10-18mm from Sigma because I heard it is tiny and sharp
• Just going with the 16mm f1.4 prime and stitching panoramas

My budget is hovering around $1100 but I could go higher if it is a lens that is gonna last me another five years. I keep going back and forth on whether I need the zoom versatility or if I should just commit to a super sharp prime and work for the composition. Has anyone here spent significant time with the 40MP sensor and found a wide angle that actually holds up?